Version: 2.0.0-alpha.39

Migrating from v1 to v2

This doc guides you through migrating an existing Docusaurus 1 site to Docusaurus 2.

Note: This migration guide is targeted at Docusaurus users without translation and/or versioning features and assumes the following structure:

├── docs
└── website
    ├── blog
    ├── core
    │   └── Footer.js
    ├── package.json
    ├── pages
    ├── sidebars.json
    ├── siteConfig.js
    └── static

Project setup

package.json

Scoped package names

In Docusaurus 2, we use scoped package names:

  • docusaurus -> @docusaurus/core

This provides a clear distinction between Docusaurus' official packages and community maintained packages. In another words, all Docusaurus' official packages are namespaced under @docusaurus/.

Meanwhile, the default doc site functionalities provided by Docusaurus 1 are now provided by @docusaurus/preset-classic. Therefore, we need to add this dependency as well:

// package.json
{
  dependencies: {
-    "docusaurus": "^1.x.x",
+    "@docusaurus/core": "^2.0.0-alpha.39",
+    "@docusaurus/preset-classic": "^2.0.0-alpha.39",
  }
}

CLI commands

Meanwhile, CLI commands are renamed to docusaurus <command> (instead of docusaurus-command).

The "scripts" section of your package.json should be updated as follows:

{
  "scripts": {
    "start": "docusaurus start",
    "build": "docusaurus build",
    "swizzle": "docusaurus swizzle",
    "deploy": "docusaurus deploy"
    ...
  }
}

A typical Docusaurus 2 package.json may look like this:

{
  "scripts": {
    "start": "docusaurus start",
    "build": "docusaurus build",
    "swizzle": "docusaurus swizzle",
    "deploy": "docusaurus deploy"
  },
  "dependencies": {
    "@docusaurus/core": "^2.0.0-alpha.39",
    "@docusaurus/preset-classic": "^2.0.0-alpha.39",
    "classnames": "^2.2.6",
    "react": "^16.10.2",
    "react-dom": "^16.10.2"
  },
  "browserslist": {
    "production": [">0.2%", "not dead", "not op_mini all"],
    "development": [
      "last 1 chrome version",
      "last 1 firefox version",
      "last 1 safari version"
    ]
  }
}

Update references to the build directory

In Docusaurus 1, all the build artifacts are located within website/build/<PROJECT_NAME>. However, in Docusaurus 2, it is now moved to just website/build. Make sure that you update your deployment configuration to read the generated files from the correct build directory.

If you are deploying to GitHub pages, make sure to run yarn deploy instead of yarn publish-gh-pages script.

.gitignore

The .gitignore in your website should contain:

# dependencies
/node_modules
# production
/build
# generated files
.docusaurus
.cache-loader
# misc
.DS_Store
.env.local
.env.development.local
.env.test.local
.env.production.local
npm-debug.log*
yarn-debug.log*
yarn-error.log*

Site configurations

docusaurus.config.js

Rename siteConfig.js to docusaurus.config.js. In Docusaurus 2, we split each functionality (blog, docs, pages) into plugins for modularity. Presets are bundles of plugins and for backward compatibility we built a @docusaurus/preset-classic preset which bundles most of the essential plugins present in Docusaurus 1.

Add the following preset configuration to your docusaurus.config.js.

// docusaurus.config.js
module.exports = {
  // ...
  presets: [
    [
      '@docusaurus/preset-classic',
      {
        docs: {
          // docs folder path relative to website dir.
          path: '../docs',
          // sidebars file relative to website dir.
          sidebarPath: require.resolve('./sidebars.json'),
        },
        ...
      },
    ],
  ],
};

Refer to migration guide below for each field in siteConfig.js.

Updated fields

baseUrl, tagline, title, url, favicon, organizationName, projectName, githubHost, scripts, stylesheets

No actions needed.

colors

Deprecated. We wrote a custom CSS framework for Docusaurus 2 called Infima which uses CSS variables for theming. The docs are not quite ready yet and we will update here when it is. To overwrite Infima' CSS variables, create your own CSS file (e.g. ./src/css/custom.css) and import it globally by passing it as an option to @docusaurus/preset-classic:

// docusaurus.config.js
module.exports = {
  // ...
  presets: [
    [
      '@docusaurus/preset-classic',
      {
        theme: {
          customCss: require.resolve('./src/css/custom.css'),
        },
      },
    ],
  ],
};

Infima uses 7 shades of each color. We recommend using ColorBox to find the different shades of colors for your chosen primary color.

/**
 * /src/css/custom.css
 * You can override the default Infima variables here.
 * Note: this is not a complete list of --ifm- variables.
 */
:root {
  --ifm-color-primary: #25c2a0;
  --ifm-color-primary-dark: rgb(33, 175, 144);
  --ifm-color-primary-darker: rgb(31, 165, 136);
  --ifm-color-primary-darkest: rgb(26, 136, 112);
  --ifm-color-primary-light: rgb(70, 203, 174);
  --ifm-color-primary-lighter: rgb(102, 212, 189);
  --ifm-color-primary-lightest: rgb(146, 224, 208);
}

footerIcon, copyright, ogImage, twitterImage, docsSideNavCollapsible

Site meta info such as assets, SEO, copyright info are now handled by themes. To customize them, use the themeConfig field in your docusaurus.config.js:

// docusaurus.config.js
module.exports = {
  // ...
  themeConfig: {
    footer: {
      logo: {
        alt: 'Facebook Open Source Logo',
        src: 'https://docusaurus.io/img/oss_logo.png',
        href: 'https://opensource.facebook.com/',
      },
      copyright: `Copyright © ${new Date().getFullYear()} Facebook, Inc.`,
    },
    image: 'img/docusaurus.png',
    // Equivalent to `docsSideNavCollapsible`
    sidebarCollapsible: false,
    // ...
  },
};

headerIcon, headerLinks

In Docusaurus 1, header icon and header links were root fields in siteConfig:

headerIcon: 'img/docusaurus.svg',
headerLinks: [
  { doc: "doc1", label: "Getting Started" },
  { page: "help", label: "Help" },
  { href: "https://github.com/", label: "GitHub" },
  { blog: true, label: "Blog" },
],

Now, these two fields are both handled by the theme:

// docusaurus.config.js
module.exports = {
  // ...
  themeConfig: {
    navbar: {
      title: 'Docusaurus',
      logo: {
        alt: 'Docusaurus Logo',
        src: 'img/docusaurus.svg',
      },
      links: [
        {to: 'docs/doc1', label: 'Getting Started', position: 'left'},
        {to: 'help', label: 'Help', position: 'left'},
        {
          href: 'https://github.com/',
          label: 'GitHub',
          position: 'right',
        },
        {to: 'blog', label: 'Blog', position: 'left'},
      ],
    },
    // ...
  },
};

algolia

// docusaurus.config.js
module.exports = {
  // ...
  themeConfig: {
    algolia: {
      apiKey: '47ecd3b21be71c5822571b9f59e52544',
      indexName: 'docusaurus-2',
      algoliaOptions: { ... },
    },
    // ...
  },
};

blogSidebarCount

Deprecated. Pass it as a blog option to @docusaurus/preset-classic instead:

// docusaurus.config.js
module.exports = {
  // ...
  presets: [
    [
      '@docusaurus/preset-classic',
      {
        blog: {
          postsPerPage: 10,
        },
        // ...
      },
    ],
  ],
};

cname

Deprecated. Create a CNAME file in your static folder instead with your custom domain. Files in the static folder will be copied into the root of the build folder during execution of the build command.

customDocsPath, docsUrl, editUrl, enableUpdateBy, enableUpdateTime

BREAKING: editUrl should point to (website) docusaurus project instead of docs directory.

Deprecated. Pass it as an option to @docusaurus/preset-classic docs instead:

// docusaurus.config.js
module.exports = {
  // ...
  presets: [
    [
      '@docusaurus/preset-classic',
      {
        docs: {
          // Equivalent to `customDocsPath`.
          path: 'docs',
          // Equivalent to `editUrl` but should point to `website` dir instead of `website/docs`
          editUrl: 'https://github.com/facebook/docusaurus/edit/master/website',
          // Equivalent to `docsUrl`.
          routeBasePath: 'docs',
          // Remark and Rehype plugins passed to MDX. Replaces `markdownOptions` and `markdownPlugins`.
          remarkPlugins: [],
          rehypePlugins: [],
          // Equivalent to `enableUpdateBy`.
          showLastUpdateAuthor: true,
          // Equivalent to `enableUpdateTime`.
          showLastUpdateTime: true,
        },
        // ...
      },
    ],
  ],
};

gaTrackingId

// docusaurus.config.js
module.exports = {
  // ...
  themeConfig: {
    googleAnalytics: {
      trackingID: 'UA-141789564-1',
    },
    // ...
  },
};

gaGtag

// docusaurus.config.js
module.exports = {
  // ...
  themeConfig: {
    gtag: {
      trackingID: 'UA-141789564-1',
    },
    // ...
  },
};

Removed fields

The following fields are all deprecated, you may remove from your configuration file.

  • blogSidebarTitle
  • cleanUrl - Clean URL is used by default now.
  • defaultVersionShown - Versioning is not ported yet. You'd be unable to migration to Docusaurus 2 if you are using versioning. Stay tuned.
  • disableHeaderTitle
  • disableTitleTagline
  • docsSideNavCollapsible is available at themeConfig.sidebarCollapsible, and this is turned on by default now.
  • facebookAppId
  • facebookComments
  • facebookPixelId
  • fonts
  • highlight - We now use Prism instead of highlight.js.
  • markdownOptions - We use MDX in v2 instead of Remarkable. Your markdown options have to be converted to Remark/Rehype plugins.
  • markdownPlugins - We use MDX in v2 instead of Remarkable. Your markdown plugins have to be converted to Remark/Rehype plugins.
  • manifest
  • noIndex
  • onPageNav - This is turned on by default now.
  • separateCss - It can imported in the same manner as custom.css mentioned above.
  • scrollToTop
  • scrollToTopOptions
  • translationRecruitingLink
  • twitter
  • twitterUsername
  • useEnglishUrl
  • users
  • usePrism - We now use Prism instead of highlight.js
  • wrapPagesHTML

We intend to implement many of the deprecated config fields as plugins in future. Help will be appreciated!

Components

Sidebar

In previous version, nested sidebar category is not allowed and sidebar category can only contain doc id. However, v2 allows infinite nested sidebar and we have many types of Sidebar Item other than document.

You'll have to migrate your sidebar if it contains category type. Rename subcategory to category and ids to items.

{
- type: 'subcategory',
+ type: 'category',
  label: 'My Example Subcategory',
+ items: ['doc1'],
- ids: ['doc1']
},

Footer

website/core/Footer.js is no longer needed. If you want to modify the default footer provided by docusaurus, swizzle it:

npm run swizzle @docusaurus/theme-classic Footer

This will copy the current <Footer /> component used by the theme to a src/theme/Footer directory under the root of your site, you may then edit this component for customization.

Pages

Please refer to creating pages to learn how Docusaurus 2 pages work. After reading that, notice that you have to move pages/en files in v1 to src/pages instead.

CompLibrary is deprecated in v2, so you have to write your own React component or use Infima styles (Docs will be available soon, sorry about that! In the meanwhile, inspect the V2 website or view https://facebookincubator.github.io/infima/ to see what styles are available).

Content

Remove AUTOGENERATED_TABLE_OF_CONTENTS

This feature is deprecated. You may read more about it in this issue. If you need the feature, use remark-toc instead and pass it to docs plugin's remarkPlugins option.

Update Markdown syntax to be MDX-compatible

In Docusaurus 2, the markdown syntax has been changed to MDX. Hence there might be some broken syntax in the existing docs which you would have to update. A common example is self-closing tags like <img> and <br> which are valid in HTML would have to be explicitly closed now ( <img/> and <br/>). All tags in MDX documents have to be valid JSX.

Tips: You might want to use some online tools like HTML to JSX to make the migration easier.

Language-specific Code Tabs

Refer to the multi-language support code blocks section.

Frontmatter

The Docusaurus frontmatter fields for the blog have been changed from camelCase to snake_case to be consistent with the docs.

The fields authorFBID and authorTwitter have been deprecated. They are only used for generating the profile image of the author which can be done via the author_image_url field.

Test your site

After migration, your folder structure should look like this:

my-project
├── docs
└── website
    ├── blog
    ├── src
    │   ├── css
    │   │   └── custom.css
    │   └── pages
    │       └── index.js
    ├── package.json
    ├── sidebars.json
    ├── .gitignore
    ├── docusaurus.config.js
    └── static

Start the development server and fix any errors

cd website
yarn start

Example migration PRs

You might want to refer to our migration PRs for Create React App and Flux as examples of how a migration for a basic Docusaurus v1 site can be done.

Support

For any questions, you can ask in the #docusaurus-1-to-2-migration Discord channel. Feel free to tag us (@yangshun and @endiliey) in any migration PRs if you would like us to have a look.

Versioned Site

⚠️ This section is a work in progress.

⚠️ Although we've implemented docs versioning since 2.0.0-alpha.37, we'd like to test it out for v2 users first before we recommend v1 users to migrate to v2. There are some changes in how v2 versioning works compared to v1. In the future, we might create a script to migrate your versioned docs easier. However, if you are adventurous enough to manually migrate, feel free to do so. Be warned though, the manual migration requires lot of work.

Changes from v1

Migrate your versioned_docs frontmatter

  • Unlike v1, The markdown header for each versioned doc is no longer altered by using version-${version}-${original_id} as the value for the actual id field. See scenario below for better explanation.

Example, you have a docs/hello.md.

---
id: hello
title: Hello, World !
---
Hi, Endilie here :)

When you cut a new version 1.0.0

In Docusaurus v1, website/versioned_docs/version-1.0.0/hello.md looks like this

---
id: version-1.0.0-hello
title: Hello, World !
original_id: hello
---
Hi, Endilie here :)

In comparison, Docusaurus 2 website/versioned_docs/version-1.0.0/hello.md looks like this (exactly same as original)

---
id: hello
title: Hello, World !
---
Hi, Endilie here :)

Since we're going for snapshot and allow people to move (and edit) docs easily inside version. The id frontmatter is no longer altered and will remain the same. Internally, it is set as version-${version}/${id}.

Essentially, here are the necessary changes in each versioned_docs file:

---
- id: version-1.0.0-hello
+ id: hello
title: Hello, World !
- original_id: hello
---
Hi, Endilie here :)

Migrate your versioned_sidebars

  • Refer to versioned_docs id as version-${version}/${id} (v2) instead of version-${version}-${original_id} (v1).

Because in v1 there is a good chance someone created a new file with front matter id "version-${version}-${id}" that can conflict with versioned_docs id.

Example, Docusaurus 1 can't differentiate docs/xxx.md

---
id: version-1.0.0-hello
---
Another content

and website/versioned_docs/version-1.0.0/hello.md

---
id: version-1.0.0-hello
title: Hello, World !
original_id: hello
---
Hi, Endilie here :)

Since we don't allow / in v1 & v2 for frontmatter, conflicts are less likely to occur.

So v1 users need to migrate their versioned_sidebars file

Example versioned_sidebars/version-1.0.0-sidebars.json:

{
+ "version-1.0.0/docs": {
- "version-1.0.0-docs": {
    "Test": [
+    "version-1.0.0/foo/bar",
-    "version-1.0.0-foo/bar",
    ],
    "Guides": [
+    "version-1.0.0/hello",
-    "version-1.0.0-hello"
    ]
  }
}

Populate your versioned_sidebars & versioned_docs

In v2, we use snapshot approach on documentation versioning. Every versioned docs does not depends on other version. It is possible to have foo.md in version-1.0.0 but it doesn't exist in version-1.2.0. This is not possible in previous version due to Docusaurus v1 fallback functionality (https://docusaurus.io/docs/en/versioning#fallback-functionality).

For example, if your versions.json looks like this in v1

// versions.json
["1.1.0", "1.0.0"]

Docusaurus v1 creates versioned docs if and only if the doc content is different. Your docs structure might look like this if the only doc changed from v1.0.0 to v1.1.0 is hello.md.

website
├── versioned_docs
│   ├── version-1.1.0
│   │   └── hello.md
│   └── version-1.0.0
│       ├── foo
│       │   └── bar.md
│       └── hello.md
├── versioned_sidebars
│   └── version-1.0.0-sidebars.json

In v2, you have to populate the missing versioned_docs & versioned_sidebars (with the right frontmatter and id reference too).

website
├── versioned_docs
│   ├── version-1.1.0
│   │   ├── foo
│   │   │   └── bar.md
│   │   └── hello.md
│   └── version-1.0.0
│       ├── foo
│       │   └── bar.md
│       └── hello.md
├── versioned_sidebars
│   ├── version-1.1.0-sidebars.json
│   └── version-1.0.0-sidebars.json
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Last updated on by Yangshun Tay